29Q-FG1A/1F/1N/1S/1U
4 – 5
No snow noise
Check pin 45 &
46 of IC 1100.
Abnormal (No
signal or noise)
Noise or signal
appear.
Check TU 251
(Tuner), SF 202 and
its related circuit.
Does AV input at
AV1 & AV2 normal ?
Check pin 29 & 31 of
IC 1100. Does signal
or noise appear ?
NO
Check IC 1100 and
its related circuits.
YES
Check circuit
between AV-in
terminal and pin 29 &
31 of IC 1100.
NO
YES
Check IC 1100 RGB
out at pin 6, 7 & 8.
Is the output normal ?
Check IC 1100 and
its related circuit.
NO
YES
Does signal output
at pin 7, 8 & 9 of
IC 851 normal ?
Check IC 851 at
input pin 1, 2 & 3
and its related
circuit.
NO
Check the related
circuit of screen
heater (FBT) and
A
YES
the CRT.
Содержание 9Q-FG1A
Страница 29: ...29Q FG1A 1F 1N 1S 1U 7 2 19 18 17 16 15 14 13 12 11 10 ...
Страница 33: ...29Q FG1A 1F 1N 1S 1U 10 2 19 18 17 16 15 14 13 12 11 10 ...
Страница 36: ...29Q FG1A 1F 1N 1S 1U 11 2 2 PWB A MAIN UNIT 1 MAIN UNIT COMPONENT SIDE A C B D E F G H 2 10 9 8 7 6 5 4 3 1 ...
Страница 37: ...29Q FG1A 1F 1N 1S 1U 11 3 19 18 17 16 15 14 13 12 11 10 ...
Страница 38: ...29Q FG1A 1F 1N 1S 1U 11 4 2 MAIN UNIT CHIP PARTS SIDE A C B D E F G H 2 10 9 8 7 6 5 4 3 1 ...
Страница 39: ...29Q FG1A 1F 1N 1S 1U 11 5 19 18 17 16 15 14 13 12 11 10 ...
Страница 55: ...29Q FG1A 1F 1N 1S 1U 16 ...
